And this commandment have we from him, That he who loveth God love his brother also.

1 JOHN 4:21KJV
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What does 1 John 4:21 mean?

1 John 4:21 says that anyone who claims to love God is also commanded to love their fellow believers. This is not just a suggestion but a direct instruction that loving God and loving others are inseparable in Christian teaching.

The apostle John is writing to early Christian communities, reminding them of a core teaching he says comes from Jesus himself. The verse highlights that love for God must show itself in real love toward others in the community, especially fellow Christians. This command ties together the relationship with God and the way believers treat each other, making both essential parts of faith.

The Greek behind 1 John 4:21

  • ἐντολή (entolē, "commandment"): This word means a direct order or instruction, not just advice. John stresses that loving others is a non-negotiable part of following God.
  • ἀγαπάω (agapaō, "loveth" / "love"): This Greek word refers to a self-giving, committed kind of love. It is not just about feelings but about active care and concern.
  • ἀδελφός (adelphos, "brother"): While literally meaning "brother," in this context it often refers to fellow believers, emphasizing the family-like bond in the Christian community.

Why 1 John 4:21 matters

  • This verse clears up the idea that someone can love God without caring for others; John says the two must go together.
  • It emphasizes that love is not just a private feeling toward God but must be lived out in relationships with other people.
  • The verse connects back to Jesus’ teachings in the Gospels, showing that John is passing on what he received directly from Jesus about the centrality of love.

Where else these words appear

“commandment” Greek G1785 · used in 65 verses

  • Matthew 5:19 Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
  • John 12:49 For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak.
  • Titus 1:14 Not giving heed to Jewish fables, and commandments of men, that turn from the truth.

“loveth” Greek G25 · used in 109 verses

  • Matthew 5:43 Ye have heard that it hath been said, Thou shalt love thy neighbour, and hate thine enemy.
  • John 15:9 As the Father hath loved me, so have I loved you: continue ye in my love.
  • 2 Thessalonians 2:16 Now our Lord Jesus Christ himself, and God, even our Father, which hath loved us, and hath given us everlasting consolation and good hope through grace,

“this” Greek G5026 · used in 119 verses

  • Matthew 10:23 But when they persecute you in this city, flee ye into another: for verily I say unto you, Ye shall not have gone over the cities of Israel, till the Son of man be come.
  • Luke 18:5 Yet because this widow troubleth me, I will avenge her, lest by her continual coming she weary me.
  • Acts 23:1 And Paul, earnestly beholding the council, said, Men and brethren, I have lived in all good conscience before God until this day.